NIMTE OpenIR  > 2018专题
Dotted Core-Shell Nanoparticles for T-1-Weighted MRI of Tumors
Shen, Zheyu; Song, Jibin; Zhou, Zijian; Yung, Bryant C.; Aronova, Maria A.; Li, Yan; Dai, Yunlu; Fan, Wenpei; Liu, Yijing; Li, Zihou; Ruan, Huimin; Leapman, Richard D.; Lin, Lisen; Niu, Gang; Chen, Xiaoyuan; Wu, Aiguo
2018
发表期刊ADVANCED MATERIALS
卷号30期号:33
摘要Gd-based T-1-weighted contrast agents have dominated the magnetic resonance imaging (MRI) contrast agent market for decades. Nevertheless, they are reported to be nephrotoxic and the U.S. Food and Drug Administration has issued a general warning concerning their use. In order to reduce the risk of nephrotoxicity, the MRI performance of the Gd-based T-1-weighted contrast agents needs to be improved to allow a much lower dosage. In this study, novel dotted core-shell nanoparticles (FeGd-HN3-RGD2) with superhigh r(1) value (70.0 mM(-1) s(-1)) and very low r(2)/r(1) ratio (1.98) are developed for high-contrast T-1-weighted MRI of tumors. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and histological analyses show good biocompatibility of FeGd-HN3-RGD2. Laser scanning confocal microscopy images and flow cytometry demonstrate active targeting to integrin alpha(v)beta(3) positive tumors. MRI of tumors shows high tumor Delta SNR for FeGd-HN3-RGD2 (477 +/- 44%), which is about 6-7-fold higher than that of Magnevist (75 +/- 11%). MRI and inductively coupled plasma results further confirm that the accumulation of FeGd-HN3-RGD2 in tumors is higher than liver and spleen due to the RGD2 targeting and small hydrodynamic particle size (8.5 nm), and FeGd-HN3-RGD2 is readily cleared from the body by renal excretion.
关键词Energy-loss Spectroscopy Iron-oxide Nanoparticles In-vivo Contrast Agents Cancer Cells T-1 Relaxivity Diagnosis Efficacy
学科领域Science & Technology - Other Topics ; Materials Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17256
专题2018专题
推荐引用方式
GB/T 7714
Shen, Zheyu,Song, Jibin,Zhou, Zijian,et al. Dotted Core-Shell Nanoparticles for T-1-Weighted MRI of Tumors[J]. ADVANCED MATERIALS,2018,30(33).
APA Shen, Zheyu.,Song, Jibin.,Zhou, Zijian.,Yung, Bryant C..,Aronova, Maria A..,...&Wu, Aiguo.(2018).Dotted Core-Shell Nanoparticles for T-1-Weighted MRI of Tumors.ADVANCED MATERIALS,30(33).
MLA Shen, Zheyu,et al."Dotted Core-Shell Nanoparticles for T-1-Weighted MRI of Tumors".ADVANCED MATERIALS 30.33(2018).
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